Network Services (DHCP/DNS)
Network Fundamentals
Overview
DHCP leases addressing parameters; DNS resolves names to records. DHCP discovery, offer, request and acknowledgement establish a lease. A valid IP address does not prove the DNS server or record is correct. Validate scope subnet, exclusions, gateway and DNS options separately.
Protocol stages
- 1DHCP Discover
- 2Offer
- 3Request
- 4Acknowledgement
- 5DNS query
Interactive exercise
Knowledge check
A client obtains a correct DHCP lease and can ping the intranet IP, but the hostname fails. What is the next targeted check?
Related practice
Lab: restore-dhcpEducational model — not real hardware, traffic or official certification.